Method of assembling sliders with pulls and with separable fastener stringers



Dec. 25, 1956 H. MOR 2,

METHOD OF ASSEM L NG SLID S WITH PULLS AND WITH SEPARABLE FASTENER STRINGERS Filed Jan. 22, 1953 VENTOR LOU H. MOR I N ATTORN ZY United States Patent 7' METHOD OF ASSEMBLING SLIDERS WITH PULLS AND WITH SEPARABLE FASTENER STRINGERS Louis H. Morin, Bronx, N. Y.

Application January 22, 1953, Serial No. 332,633

Claims. (Cl. 29408) This invention relates to what are referred to as slider and pull structures used on separable fastener stringers to couple and uncouple the stringers. More particularly, the invention deals with a method of assembling a pull with a slider body to form a united structure. Still more particularly, the invention deals with a method, wherein the slider and pull assemblage can be performed directly upon a pair of stringers, thus completing attachment of the slider to the stringers, after conventional end stops have been fixed to the stringers.

The present application is a continuation-in-part of my application Serial No. 295,244, filed June 24, 1952, for Method of Assembling Sliders with Separable Fasteners.

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and in which:

Fig. 1 is a plan'view diagrammatically illustrating the assemblage of the slider and pull to a pair of stringers, with part of the construction broken away and in section.

Fig. 2 is a broken longitudinal sectional view through the structure shown in Fig. 1, omitting the separable fastener stringers.

Fig. 3 is a view, similar to Fig. 2, diagrammatically illustrating the assemblage of the pull and slider, preparatory to shaping the slider body to permanently couple the pull therewith.

Fig. 4 is a diagrammatic view illustrating the method of attaching the slider to stringers.

In illustrating one adaptation and use of my improved method, I have shown in the accompanying drawings a slider body 10 having top and bottom walls 11 and 12, joined in a connecting web 13. The walls 11 and 12 are contracted at opposed ends, as will be apparent from a consideration of Fig. l of the drawing. These ends are designated by the single channel end portion 14 and the double channel end portion 15. The single channel end portion of the walls 11 and 12 have inwardly extending side flanges 16 and 17 for engagement with the scoops 18 and 19 of a pair of stringers shown in part at 20 and 21 in Fig. l of the drawing.

The flanges 16, 17 have inner straight surfaces 22, 23 and flared surfaces 24 and 25, respectively. The top wall 11 has, on its inner surface inwardly of the flange 16, a transverse bearing recess 26 which opens into enlarged recesses 27 at the ends thereof. The enlarged recesses 27 are provided to permit free swinging movement therein of a lock element 28 carried on a pull 29. In some instances, two lock elements are employed on a pull and, in such cases, the two elements will operate in the two recesses provided. However, in the present construction, there is a single lock element 28 which is located at one end of a cross-rod or pivot 30 of the pull to operate in the enlarged recess 27 at said side of the slider body. This lock element is adapted to be positioned between adjacent scoops, for example, the scoops 19 of the 2,775,027 Patented Dec. 25, 1956 1 of the drawing.

It will be understood that the pull 29 can be of any desired shape or form beyond the pivot cross-rod 30 and, in the construction shown, the pull has, extending integrally from the ends of the rod 30, side members 31 which converge and join in the contracted rounded end 32. The sides 31 conform with the contracted end portion 14 of the slider body 10, as seen, and, beyond the end portion 14, the side members 31 are joined by a cross-bar 33, which provides a fingerpiece portion. This construction will facilitate the movement of the pull into a flat position upon the stringers, or the garment or article to which the stringers are attached.

This construction of the slider and pull is described more fully and is claimed in my application for United States Letters Patent entitled Slider for Separable Fasteners, Serial No. 332,634, filed concurrently herewith and reference may be made thereto in this connection.

The cross-rod or pivot bar 30 of the pull extends transversely of the slider body in the bearing recess 26 and, as shown in Fig. 3 of the drawing, the walls 11 and 12 of the slider body 10 are initially formed with a sufiicient spacing between inner surfaces of the walls 11 and 12 at the single channel end of the body and the flanges 16 and 17 carried thereon to permit free passage of the pivot bar 30, including the lock element 28 of the pull into the channel of the slider body through the single channel end portion 14 for positioning of the pivot bar 30 in the bearing recess 26. When the pivot bar of the pull has been so positioned, the web 13 connecting the walls 11 and 12 of the slider body is then compressed to move the walls 11 and 12 toward each other to a position such as shown in Fig. 2 of the drawing, in which position the pull is retained against displacement from the slider body. In other Words, the diameter of the pivot rod 30 is then greater than the spacing between adjacent inner surfaces of the flanges 16 and 17.

In order to permit the compression and deformation of the web 13 in this manner, the slider body is preferably die cast of the usual metal as this will permit a degree of compression up to 40% or 50% without danger of destruction or breakdown of the material employed. The compression of the web 13 may be accomplished by means of suitable tools, such as shown in Fig. 4, and during the compression of the web, the opposing faces of the walls are maintained parallel as described in my aforesaid application Serial No. 295,244, filed June 24, 1952.

While the assemblage, according to the method above set up, can be accomplished simply between the slider body and pull, it is preferred that this operation be performed with the parts arranged directly upon coupled stringers in the manner previously described. It is only essential, in performing this operation, to position the lock element 28 between adjacent scoops of one of the stringers in the manner shown and, with the stringers in the separated position illustrated so that the scoops will be properly positioned within the channels of the slider body, after which, pressure will be applied to the walls 11 and 12 to move the walls from the position shown in Fig. 3 to that shown in Fig. 2. The advantage of this method of procedure is that it eliminates the cost of assembling the pull to the slider as a separate operation in addition to assembling the slider directly to the stringers as previously described. In other words, by employing the method herein defined, it is possible to produce completely formed stringers of a separable fastener, that is to say, stringers which include both the top and bottom stops or detachable couplings, when the latter are employed and, then, to assemble the pull with the slider body and, at the same time, apply the slider to the stringers.

The saving in" timew and laborranduhandling will be appreciated from the standpoint that complete separable fastener stringers can be formed with their end stops in a continueduninterrupted operationto the point of .actually joining the pair of stringers to form the fastener and, in this cycle-of operation,- .the slider and pull assemblage. is

united with-each fastener. in the continueduninterrupted runofth'e stringers. Forexample, in Fig. 4 of the drawing, I have diagrammatically shown the method. of assembling slidersas disclosed. in Fig.2 with a continuous run of stringers-and, in said rfigure, .34 represents a series of stringers, the bottom stop .of onestringer being indicated at 35 andfa top stop of another stringer being indicated at 36, 37 representing the spacing .of tape between successive stringers. Theestringersiare passed through spring gripping jaws, asat 3.8 andaresuitably divided between a punch 39 and bedplate 40 by a dividing tool shown in part at 41 which passes upthrough' an opening 42 in the bedplate 40; Thebedplate 40 :has a: socket, as at 43, for reception of a slider body having the pull 29 extending downwardly in an, opening .44 of the bedplate when the punch 2,9 engagesthe wall 12,.of the slider it) to close the slider. Thebedplate. 40 is backed up .and reinforced by a backing tool 45. At lil. one of the sliders and pulls is shown attached -to.a pair. of stringers. The method of assembling arsliderto'astringer in. accordance with the foregoing is more fully described and claimed in my aforesaid application ,Serial Number.295,244, filed June 24, 1952.

My improved-method, ,invaddition to simplifying production of complete separable fasteners of the kind under vironment of the bearing recess and beyond the limits of thechannel of the sliderbody for-free passage of the scoops-therethrough, so that, when the lock element 28 is moved into inoperative position, the cross-rod 30 ofthe pull will not interfere with free passage of the scoops through the channelled slider body.

The slider bodyas shown in Fig. 3, that is, prior to compression, maybe .termed a slider blank.

Having fully described my invention, what I claim as new anddesire. to secure by Letters Patent is:

1. The methodo'f assembling a slider and pull for separablefastener stringers: comprising inserting a pivot portiorr of :a pullbetweena pairiof parallel walls of a slider blank, said slider blankcomprising said pair of parallel walls connected together by a compressible web, said web I beingzofsucha height as to spacesaid walls apart a distance; greater than the thickness of the pivot portion of the pull,. one of said Walls having a recess extending transversely'thereof and opening through the inner surface thereof, moving the pivot portion of the pull into said recess, .then reducing the distance between said walls to a distance less than the thickness of said pivot portion by compressingthe web of said blank to'deform the same and to move. the slider walls towards each other while maintaining them parallel, said walls being thereby moved into stringer-controlling position to enable said slider to couple-:and :uncouple a pair of stringers.

2. The method'of continuously producing individual lengths. of separable fasteners, each length comprising a pairof coupledstringers having a slider assembled'therewith, which comprises forming a continuous length of couple-d stringers from a pair of continuous stringers, each saidcontinuous stringer having successive spaced groups of scoops mounted-thereon, each pair of opposed groups ofscoopsof said. continuous lengthof coupled stringers beinguinterlockcd to form-a section, advancing each sectionzto a; slider-applying i station, separating the stringers of said section adjacentone endthereof atsaid' station,

positioning a channeled slider blank between said separated stringers to aline the latter with lateral openings in the slider blank, said slider blank comprising a deformable web portion connecting a pair of parallel, flanged walls spaced apart a distance substantially greater than the width of said scoops, said slider blank having a transverse groove tunneling across one wall and opening through the lower surface and both side edges of said wall, inserting a transverse pivot bar of a pull into said groove, moving the separated stringers towards each other to enter each said stringer laterally through oneof said lateral openings and into a channel of the slider blank, deforming the web portion of said blank by compressing the same to move said walls towards each other while maintainiir them parallel, thereby forming a slider in operative position on said section and having said pull assembled thereto, the distance between said flanged walls after said compression step being less than the diameter ofsaid pivot bar, and severing said slider-containing section from the remainder of said sections .to produce an. individual length of separable fastener.

3. The method of continuously producing individual lengths. of separable fasteners, each length comprising av pair of coupled stringers havingwa slider assembled therewith, which comprises forming a continuous length of,

coupled stringers from a pair of continuous stringers,

each said continuous stringerhaving successive spaced groups of scoops mounted thereon, each pair of opposed groups of scoops of said continuous length of .coupled stringers being. interlocked to form a section, each section having top and bottom stops, advancing each section to a slide-r-applying station, separating the stringers of said section adjacent one end thereof at said station, positioning a-channeled slider blank between said separated stringers to aline the latter with lateral openings in the slider blank, said slider blank comprising a deformableweb portion connecting a pair of parallel, flanged walls spaced-apart a distance substantially greater than the width of said scoops, said slider blank having a transverse groove tunneling across one wall and opening through the lower surface thereof and also having a transverse pivot bar of a pull disposed in said groove, said pivot bar having a diameter smaller than the distance between said flanged walls, moving the separated stringers towards each other to enter each said stringer laterally through one of said lateral openings and into a channel of the slider blank, deforming the web portion of said blank by compressing the same to move said walls'towards each other- While maintaining them parallel, thereby forming a slider inoperative position on said section and having said pull assembled thereto, the distance between said flanged walls 7 after said compression step being less than the diameter of said pivot bar, and severing. said sliderecontaining-sect-ion from the remainder of said sections to produce an individual length of. separable fastener;

4. The method -of-continuously producing individual lengths of separable fasteners, each length comprising a pair of coupled stringers having a slider assembled therewith, which'comprises forming a continuous length of coupled stringers from a pair of continuous stringers, said continuous length of coupled stringers comprising a plurality of successively spaced sections of coupled scoops, positioning a channeled slider blank at a slider-applying station, said slider blank comprising a deformable web portion'connecting a'pair of parallel, flanged'wall spaced apart a distance substantially greater than the widthofsaid scoops, saidslider blank having a transverse groove in i one wallopening through the lower surface thereof, inserting atransverse pivot bar of a pull into said groove,

said pivot bar havinga diameter smaller than the distance between said flanged walls, advancing each section to said slider applying station, separating the stringers of said section adjacent one-end thereof, positioning said sep- I arated stringers to aline the same with lateral openings'in the slider blank, moving theseparated stringers toward-s each other to enter each said stringer laterally through one of said lateral openings and into a channel of the slider blank, deforming the web portion of said blank by compressing the same to move said walls towards each other while maintaining them parallel, thereby forming a slider in operative position on said section and having said pull assembled thereto, and severing said slider-containing section from the remainder of said sections to produce an individual length of separable fastener.

5. The method of continuously producing individual lengths of separable fasteners, each length comprising a pair of coupled stringers having a slider assembled therewith, which comprises forming a continuous length of coupled stringers from a pair of continuous stringers, said continuous length of coupled stringer comprising a plurality of successively spaced sections of coupled scoops, positioning a channeled slider blank at a slider-applying station, said slider blank comprising a deformable web portion connecting a pair of parallel, flanged walls spaced apart a distance substantially greater than the width of said scoops, said slider blank having a transverse groove in one wall opening through the lower surface thereof and also having a transverse pivot bar of a pull disposed in said groove, said pivot bar having a diameter smaller than the distance between said flanged walls, advancing each section to said slider-applying station, separating the stringers of said section adjacent one end thereof, positioning said separated stringers to aline the same with lateral openings in the slider blank, moving the separated stringers towards each other to enter each said stringer laterally through one of said lateral opening and into a channel of the slider blank, deforming the web portion of said blank by compressing the same to move said walls towards each other while maintaining them parallel, thereby forming a slider in operative position on said section and having said pull assembled thereto, and severing said slider-containing section from the remainder of said sections to produce an individual length of separable fastener.

6. The method of applying a slider to a pair of coupled separable fastener stringers having top and bottom stops which comprises: positioning a channeled slider blank at a slider applying station, said slider blank comprising a deformable web portion connecting a pair of parallel, flanged walls spaced apart a distance substantially greater than the scoop width of the stringer, said slider blank having a transverse groove tunneling across one wall and opening through the lower surface of said Wall, said groove being enlarged at one end portion thereof, inserting a transverse pivot bar of a pull into said groove, said pivot bar having a diameter smaller than the distance between said flanged walls and also having a lock tooth disposable in said groove enlargement, moving said stringers laterally through lateral openings in said blank and into the channels thereof, deforming the web portion of said blank by compressing the same to move said walls towards each other While maintaining them parallel, thereby forming a slider in operative position on said stringers and having said pull assembled thereto, and the distance between said flanged walls after said compression step being less than the diameter of said pivot bar.

7. The method of applying a slider to a pair of separable fastener stringers which comprises: positioning a channeled slider blank at a slider-applying station, said slider blank comprising a deformable web portion connecting a pair of walls spaced apart a distance greater than the scoop width of the stringers, said slider blank having a transverse groove in one wall opening through the lower surface of said wall, inserting a transverse pivot bar of a pull in said groove, moving said stringers laterally through lateral openings in said blank and into the channels thereof, and deforming the web portion of said blank by compressing the same to move said walls towards each other, thereby forming a slider in operative position on said stringers and having said pull assembled thereto.

8. The method of applying a slider to a separable fastener stringer which comprises positioning a channeled slider blank at a slider-applying station, said slider blank comprising a deformable web portion connecting a pair of parallel walls, said slider blank having a transverse groove in one wall opening through the lower surface thereof and also having a transverse pivot bar of a pull disposed in said groove, moving the stringer laterally through a lateral opening in said blank and into a channel thereof, and deforming the web portion of said blank by compressing the same to move said walls towards each other while maintaining the walls parallel to each other, thereby forming a slider on said stringer having said pull assembled thereto.

9. The method of assembling a pull with a slider and said slider with a separable fastener stringer which comprises: positioning a channeled slider blank at a sliderapplying station, said slider blank comprising a deformable web portion connecting a pair of parallel walls, one of said walls having a transverse groove opening through the inner surface thereof, inserting a pivot portion of a pull between said walls and into said groove, moving the stringer laterally through a lateral opening in said blank and into a channel thereof, said walls being spaced apart a distance greater than the thickness of said pivot portion and stringer, and deforming the web portion of said blank by compressing the same to move said walls towards each other while maintaining them parallel, thereby forming a slider on said stringer having said pull assembled thereto.

10. The method of producing a slider for use with separable fastener stringers, said slider having a pull operatively associated therewith and being engageable by a pivot portion of said pull, which comprises forming a die cast slider blank having a pair of parallel walls connected together by a compressible web, said web being of such a height as to space said walls apart a distance greater than the thicknesses of said pivot portion or of said stringers, inserting said pivot portion of the pull between said walls of the slider blank, one of said walls having a transverse recess opening through the inner surface thereof, moving the pivot portion of the pull into said recess, then reducing the distance between said walls to a distance less than the thickness of said pivot portion by compressing the web of said blank to deform the same and to move the slider walls towards each other while maintaining them parallel, said walls being thereby moved into stringer-controlling position to enable said slider to couple and uncouple a pair of stringers.

References Cited in the file of this patent UNITED STATES PATENTS 2,140,764 Reiter Dec. 20, 1938 2,189,727 Corner Feb. 6, 1940 2,219,165 Nedal Oct. 22, 1940 2,299,133 Epes Oct. 20, 1942 2,474,908 Morin July 5, 1949 2,486,401 Gerstman Nov. 1, 1949 

